enum mode

.cs

    public enum TransformMode {
        Off, XAxis, YAxis, ZAxis, Arbitrary, Random
    };
    
    switch (mode)
                {
                    case TransformMode.XAxis:     return Vector3.right;
                    case TransformMode.YAxis:     return Vector3.up;
                    case TransformMode.ZAxis:     return Vector3.forward;
                    case TransformMode.Arbitrary: return arbitraryVector;
                    case TransformMode.Random:    return randomVector;
                }